People! It was always my intention to have people milling about. I made 3 different custom brushes that I used to quickly populate the ground.(Fig.07a and Fig.07b)

Fig.07a

Fig.07b

Some subtle lighting emanating from the dome in the distance adds a little more "coolness". (Fig.08)

Fig.08

I then add more detail to the mid ground structures on the left. I'm bringing shapes forward, defining slight overhangs, adding lights to the side plane. It needs all these small touches to bring it to life. (Fig.09)

Fig.09

Added a lot more drawing to the lower right structure and some clouds to obscure the tops of the buildings on the left. It wasn't the focal point so a few soft edges will keep the eye from wandering off the page. Signed and done. I consider this a sketch so I only take it so far. (Fig.10)